1. The Carboniferous Bowland Shale gas study: geology and resource estimation;Andrews,2013
2. Environmental contamination due to shale gas development;Annevelink;Science of The Total Environment,2016
3. Anp - Brazilian Petroleum Agency. Exploratory Blocks – SPAR-CN and SPAR-C Sectors – Paraná Basin, Brazil 12a Auction Document; 2013.
4. Anp - Brazilian Petroleum Agency. Suspension report (in portuguese), Section 3, June 25th 2014.
5. Hydrogeology of the Mercosul Aquifer System in the Paraná and Chaco-Paraná Basins, South America, and comparison with the Navajo-Nugget Aquifer System, USA;Araújo;Hydrogeology Journal,1999